If you have “regular” PC support with all the bells and whistles turned on, and the VR version is for Mobile, you can use Device Profiles to manage scalability between the platforms. Our new sample project Lyra is using Nanite and Lumen and runs on both PC and Mobile. However, with PC VR it’s not that straight forward…
The “easiest” solution right now is to have separate Levels for different platforms. You can use sublevels and lighting scenarios to manage it to some extent, but it’s not as plug-and-play as our scalability for regular mobile and PC/console. It’s a shortcoming that’s been identified, and we’re working on a solution, but we have no ETA to share atm.